Six test-tubes contain aqueous solutions of FeSO4, H2SO4, Mn(NO3)2,H2O2, Pb(NO3)2, NaOH.
(a) Identify the content of each test-tube without using other reagents. Write the results in tabular form. Write the equations for the chemical reactions used for the identification.
(b) After identification, perform four reactions each time using three of the identified compounds and write the equations.